docs: def stats_incr(self, key, value=1):
          """Increment the specified key in the per-message measurements
  
          .. versionadded:: 3.13.0
  
          .. note:: If this method is called when there is not a message being
              processed, a message will be logged at the ``warning`` level to
              indicate the value is being dropped. To suppress these warnings,
              set the :attr:`rejected.consumer.Consumer.IGNORE_OOB_STATS`
              attribute to :data:`True`.
  
          :param key: The key to increment
          :type key: :class:`str`
          :param value: The value to increment the key by
          :type value: :class:`int`
  
          """
          if not self._measurement:
              if not self.IGNORE_OOB_STATS:
                  self.logger.warning('stats_incr invoked outside execution')
              return
          self._measurement.incr(key, value)